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COVER PAGE COVER PAGE
May 11, 2020
Jan. 20, 2020
Cover [Abstract]    
Document Type 8-K  
Document Period End Date May 11, 2020  
Entity Registrant Name LOGITECH INTERNATIONAL S.A.  
Entity File Number 0-29174  
Entity Incorporation, State or Country Code V8  
Entity Address, Address Line One Apples  
Entity Address, Country CH  
Entity Address, Address Line Two c/o Logitech Inc.  
Entity Address, Address Line Three 7700 Gateway Boulevard  
Entity Address, City or Town Newark  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94560  
City Area Code 510  
Local Phone Number 795-8500  
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Entity Emerging Growth Company false  
Title of 12(b) Security Registered Shares  
Trading Symbol LOGI  
Security Exchange Name NASDAQ  
Entity Central Index Key 0001032975  
Amendment Flag   false